<p>The main software we use to process cave data and surface surveys is <b>survex</b>
which has been written over several decades by CUCC cavers.
The first version was written during the 1990 Expo in Austria in the (old) potato hut.
<p>Download the survex package here: <ahref="https://survex.com/">www.survex.com</a> and install it.
<p>You will discover that the application installed is actually called "aven" but do not be concerned.
This is what you will use to visualise .svx files as beautiful cave centre-line surveys.
<p>If you are entering new survey data from a new cave, you will also need either
<ahref="https://bitbucket.org/goatchurch/tunnelx/wiki/Home">TunnelX</a> or
<ahref="https://therion.speleo.sk/">Therion</a> to
convert your sketches into actual plan and elevation presentation-quality surveys.
<h2>TunnelX</h2>
<p>Tunnel was written by <ahref="http://expo.survex.com/folk/l/jtodd.htm">Julian Todd</a> (18 Austrian expos since 1989). It allows the generation of full 3D models of cave passages which can be viewed using a VRML browser.